What do I look for next
Spark plugs, coil, rotor, cap, ignition sensor, bad (old) gasoline, EGR, vacuum hose routing...
Does it throw a code ("check engine" light)?
If you do not have a vacuum leak in a hose. then check the idle air control because this is what regulates the idle and sends this info to computer. You may have to take it off to clean it or replace if bad. Good-Day!
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